I have two questions that I have been struggling with the past couple of weeks and can't find the answers to, so hopefully someone here has some insight!

1) So I have calibre and buy books from a number of online places, Amazon being one of them. I noticed the other day that about 5 of my Amazon books have updates available. How do I go about updating the books that I have on my ereader? I have to go through calibre, as I have a Kobo Touch but I can't see where to get the updated file, or anything. I am seriously at a loss, and any wisdom is appreciated.

2) Lately, everytime I sync my Kobo Touch to calibre (version 0.8.65 - I know it's not the latest, but I had issues with 0.9.0), the "status" of my books that I have already read go to "unread". This isn't a huge issue-just kind of annoying. I thought I'd throw it out there. (I know this question probably doesn't belong in this thread, but I thought I'd just put the two posts together)